Puris, D.D.PurisSchmidt-Langhorst, C.C.Schmidt-LanghorstLüdge, K.K.LüdgeMajer, N.N.MajerSchöll, E.E.SchöllPetermann, K.K.Petermann2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/23037110.1364/OE.20.0272652-s2.0-84870614436We present a novel theoretical time-domain model for a quantum dot semiconductor optical amplifier, that allows to simulate subpicosecond pulse propagation including power-based and phase-based effects. Static results including amplified spontaneous emission spectra, continuous wave amplification, and four-wave mixing experiments in addition to dynamic pump-probe simulations are presented for different injection currents. The model uses digital filters to describe the frequency dependent gain and microscopically calculated carrier-carrier scattering rates for the interband carrier dynamics. It can be used to calculate the propagation of multiple signals with different wavelengths or one wideband signal with high bitrate.en621journal article